Seven months after mailing the results, those unprotected will be followed by phone to ask about their status of the series of vaccinations and promoters or barriers to vaccinations. Their self-reported vaccination will be verified with medical records. Participants will be asked to provide information about the date of vaccinations, as well as the location of the clinic or doctor's office where participants received vaccinations. Participants will also be asked to sign a medical release form giving project staff permission to request medical records for their vaccinations. The bilingual interviewers are blinded about participants being in the intervention or control group at post-test.